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LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024) — main product image
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)
LG

LG E1LGOLED77B4PUARB 77-Inch OLED B4 4K Smart TV (2024)

★★★★★4.5 (140 reviews)
4KHDMI 2.1

Stunning 77-inch OLED 4K smart TV with self-lit pixels, 120Hz refresh rate, and Dolby Vision/Atmos for cinematic immersion.

$1,796.99*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The LG OLED B4 Series delivers a massive 77-inch canvas of self-lit OLED pixels, where each pixel produces its own light and can shut off completely for true black levels that LED TVs simply cannot achieve. The result is infinite contrast, rich color saturation, and stunning detail in both dark and bright scenes. LG's AI-powered processor optimizes picture and sound in real time, while Dolby Vision HDR ensures that compatible content is displayed with precise brightness, color, and contrast as intended by filmmakers. Dolby Atmos audio adds a spatial dimension to the built-in sound system, making dialogue clearer and action more enveloping.

For gamers, the B4 is exceptionally well-equipped with a native 120Hz refresh rate, four HDMI 2.1 ports supporting 4K at 120fps, and compatibility with both NVIDIA G-Sync and AMD FreeSync Premium for tear-free gameplay. LG webOS 24 provides a polished smart TV experience with quick access to streaming apps, voice assistants, and personalized recommendations. While the B4 sits below LG's C4 and G4 models in processing power and peak brightness, it offers the core OLED experience — perfect blacks, wide viewing angles, and responsive gaming performance — at a more accessible price point for the 77-inch class.

Key Features

SELF-LIT PIXELS: LG's signature OLED technology creates an incredible watching experience and stellar picture quality illuminated with over 8 million self-lit pixels. Take in rich and accurate colors from the brightest to darkest parts of the scene thanks to 100% Color Volume* and with 100% Color Fidelity.

DOLBY VISION, FILMMAKER AND DOLBY ATMOS: Experience the magic of the big screen right from your couch. Every LG OLED comes loaded with Dolby Vision for extraordinary color, contrast and brightness, plus Dolby Atmos* for sound you can feel all around you. Land in the center of the action with FILMMAKER MODE, allowing you to see films just as the director intended.

a8 AI PROCESSOR: No more fiddling with picture settings. The α8 AI Processor 4K with AI Picture Pro identifies the type of content you're watching to automatically select the ideal setting and fine-tune the picture for the best watching experience and with Multi View with 2 screens lets you split your screen into two unique views so you can watch even more than before.

WEBOS 24 & LG CHANNELS: No matter which TV you choose, your LG TV makes it easier than ever to find what you need and more. Browse all your favorite streaming apps and let LG Channels connects you to 300+ free channels of sports, fitness, cooking and more.

GAMING: Packed with gaming features, the LG OLED B-Series comes with everything you need to win. Experience crisp, smooth imagery from a 0.1ms response time and native 120Hz refresh rate. All LG OLED TVs have NVIDIA G-Sync, AMD FreeSync Premium and VRR to further improve gaming quality. Four HDMI 2.1 inputs allow you to plug in all the devices you need. Whether you game on consoles or on the cloud,* the LG Game Dashboard and Game Optimizer put all the control at your fingertips.

webOS RE:NEW PROGRAM: Enjoy new software updates and feature refreshes for 5 years with webOS Re:New Program.

Specifications

Brand
LG
Model
OLED77B4PUA (2024)
Screen Size
77 Inches
Display Technology
OLED
Resolution
4K (3840 x 2160)
Refresh Rate
120Hz
HDR
Dolby Vision
Audio
Dolby Atmos
Smart TV Platform
LG webOS 24
HDMI
4x HDMI 2.1
Gaming Features
NVIDIA G-Sync, AMD FreeSync Premium

Pros & Cons

👍 Pros

  • Self-lit OLED pixels deliver perfect blacks and exceptional contrast at the 77-inch size
  • 120Hz refresh rate with G-Sync and FreeSync Premium makes it excellent for console and PC gaming
  • Four HDMI 2.1 ports accommodate multiple high-bandwidth devices simultaneously
  • Dolby Vision and Dolby Atmos support provide a cinematic viewing and audio experience

👎 Cons

  • OLED panels carry a risk of permanent burn-in from prolonged static image display
  • 77-inch OLED commands a significant price premium over similarly sized LED/QLED alternatives
  • Built-in speakers, while Atmos-capable, lack the depth and power of a dedicated sound system
  • B4 series uses a less advanced processor than LG's higher-tier C4 and G4 OLED models

Frequently Asked Questions

The LG B4 uses self-lit OLED pixels that can turn on and off individually, producing perfect blacks, infinite contrast, and vibrant colors that backlit LED panels cannot match.
Yes, it is compatible with both NVIDIA G-Sync and AMD FreeSync Premium, and its 120Hz refresh rate and HDMI 2.1 ports support smooth, responsive gaming.
It runs LG webOS 24, which provides access to popular streaming apps, voice control, and a customizable home screen.
It has four HDMI 2.1 ports, supporting 4K at 120Hz, eARC, and high-bandwidth features for gaming consoles and media devices.
Yes, the TV has built-in Dolby Atmos support for immersive spatial sound through its internal speakers, and it can pass Dolby Atmos audio to compatible soundbars or receivers.

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